A Theoretical investigation on HC Mixtures as Possible Alternatives to R134a in Vapor Compression Refrigeration

• Main Author: Feiza Memet
• Format: Article
• Language: English
• Published: Eftimie Murgu University of Resita 2014-07-01
• Series: Analele Universităţii "Eftimie Murgu" Reşiţa: Fascicola I, Inginerie
• Subjects: evaporation; condensation; temperature; performance; compresso
• Online Access: http://anale-ing.uem.ro/2014/19.pdf

This paper provides a theoretical comparison of the performance of refrigerants in use in a vapor comparison cycle. It is about the phase-out of R134a from actual refrigeration system, comparison being performed for this chemical and two more ecological mixtures: R290/R600a described as (30/70) and (40/60). Were investigated effects of condensation temperatures and evaporation temperatures on performance measures as COP (Coefficient of Performance) and VCC (volumetric cooling capacity). COP is a measure of the performance of the refrigeration cycle, while VCC is an indicator of compressor size. Results of this study will reveal that R290/R600a (30/70) is a good option when it is about substitution of R134a, from energy efficiency point of view, in terms of COP. R290/R600a (40/60) has VCC values bellow the ones of R134a, but comparable.